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#20935 01/28/2005 6:46 PM | Joined: Nov 2004 Posts: 29 Apprentice | | Apprentice Joined: Nov 2004 Posts: 29 | I have a 51 6400. right now im getting it running and going it has the hydravac on it and a rebuilt master that i know is good i dont know about the booster. if its good im gonna leave it for now. but if its not then im gonna be looking for alternatives. what im thinking is what booster w/dual master combo can i go to cause i have drum/drum brakes. im gonna be hauling some heavy load and when i want to stop i want to be able to. can i get a m/c and booster from my auto parts place if so what model car would be a good one to use. otherwise which aftermarket one would be good. i have a 261 w/4spd. thanks chris | | |
#20936 01/28/2005 9:16 PM | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | I've spent some time thinking about this. I have a '51 4400 and a '52 6400 and neither one has decent brakes.
A rebuilt hydrovac is only a few hundred bucks and unless you intend to update the rest of the brake system, that's probably the easiest way to go.
The next choice is perhaps to purchase an under floor power booster kit, and instead of using a car type master cylinder use a dual master from a late 60's early 70's C-60 that would be dual and sized for a drum/drum truck.
You'll also need to run new brake lines, but replacing the brake lines on a 50-year-old truck is probably a good idea anyway.
On mine I think I'll update the entire brake system based on a P30 with a 12,000 lb GVW and disk brakes on the front.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | |
#20937 01/29/2005 2:32 AM | Joined: Mar 2004 Posts: 3,068 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 3,068 | I put a dual master cylinder under my 48 4400 from a 66 Catalina with drum/drum brake setup. I also used a brake booster from a 75 Chevy truck to make it power brakes,
Scott | | |
#20938 01/29/2005 4:04 AM | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | Scott I assume you removed the hydrovac and re-plumbed the brake system?
How did you choose that particular master cylinder?
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | |
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